Abstract: Disclosed is a silver powder preparation method including a silver salt reduction step. The silver salt reduction step includes a reaction solution preparation step for preparing a first reaction solution and a second reaction solution and a precipitation step for allowing reaction between the first reaction solution and the second reaction solution to precipitate silver particles. The first reaction solution contains silver ions, ammonia, an alkali metal salt of an organic acid, and a phosphorous compound, and the second reaction solution contains a reducing agent. The content of the phosphorous compound and the reaction temperature of the precipitation step are adjusted so that the shrinkage rate of the silver powder is adjusted within a range of 5% to 20% at 500° C. when the reaction temperature is heated to 800° C. at a heating rate of 50° C./min.

Abstract: The inventive concept provides a substrate treating apparatus. The substrate treating apparatus includes a support plate for supporting a substrate and applying a power; a plasma control unit placed above the support plate to face the support plate; and a top electrode unit positioned to surround the plasma control unit, and wherein the plasma control unit includes: a dielectric plate positioned to face a top surface of a substrate mounted on the support plate; and a metal plate positioned above the dielectric plate, and the metal plate is electrically connected to the top electrode unit.

Abstract: A driving assistance system and method for a driver including a sensor that senses a state in front of a vehicle corresponding to a driver's field of vision through a vehicle windshield; a detector that photographs the driver's face and detects an illumination distribution of the face or a state of the driver based on a photographed image of the driver; and a processor that determines whether or not the driver's glare occurs based on the state in front of the vehicle sensed by the sensor and the illumination distribution of the face or the state of the driver detected by the detector are disclosed.

Abstract: According to at least one aspect, the present disclosure provides a vehicle camera comprising: a lens module; a circuit board including an image sensor configured to convert light incident through the lens module into an electrical signal; a front housing having the lens module coupled to a front side thereof and the circuit board coupled to a rear side thereof; a rear housing coupled to the rear side of the front housing and provided to surround the circuit board; an outer cover configured to surround at least a portion of the lens module, the outer cover including one or more infrared passing portions; and a depth camera module included inside the outer cover and coupled to the front side of the front housing, the depth camera module being configured to capture an image for detecting an obstacle around the vehicle using the infrared passing portion.